用于由线性大气压等离子体源沉积的液晶的具有可调预倾角的取向层。

Orientating layers with adjustable pretilt angles for liquid crystals deposited by a linear atmospheric pressure plasma source.

作者信息

Jian Shih-Jie, Kou Chwung-Shan, Hwang Jennchang, Lee Chein-Dhau, Lin Wei-Cheng

机构信息

Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan.

出版信息

Rev Sci Instrum. 2013 Jun;84(6):063501. doi: 10.1063/1.4807695.

DOI:10.1063/1.4807695

PMID:23822339

Abstract

A method for controlling the pretilt angles of liquid crystals (LC) was developed. Hexamethyldisiloxane polymer films were first deposited on indium tin oxide coated glass plates using a linear atmospheric pressure plasma source. The films were subsequently treated with the rubbing method for LC alignment. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy measurements were used to characterize the film composition, which could be varied to control the surface energy by adjusting the monomer feed rate and input power. The results of LC alignment experiments showed that the pretilt angle continuously increased from 0° to 90° with decreasing film surface energy.

摘要

开发了一种控制液晶（LC）预倾角的方法。首先使用线性大气压等离子体源在氧化铟锡涂层玻璃板上沉积六甲基二硅氧烷聚合物薄膜。随后对这些薄膜进行摩擦处理以实现液晶取向。利用傅里叶变换红外光谱和X射线光电子能谱测量来表征薄膜成分，通过调节单体进料速率和输入功率可以改变薄膜成分，从而控制表面能。液晶取向实验结果表明，随着薄膜表面能降低，预倾角从0°连续增加到90°。